Estimate the security strength in bits for asymmetric parameters of sizes L and N.

Synopsis

Declared in <openssl/bn.h>

int
BN_security_bits(
    int L,
    int N);

Return Value

Estimated security strength in bits (NIST SP 800‐57 style).

Parameters

Name

Description

L

Public‐key / modulus size in bits (for example RSA modulus length).

N

Private‐value size in bits (for example subgroup order); may be 0 when unused.

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